U+2290 • mathematics
The 'Square Original Of' symbol (⊐) is used in mathematical contexts to denote a relation where one element is the original of another in a square or lattice structure. It is a specialized relation symbol.
The Symbol For Square Original Of (⊐) is a unicode character in the Basic Multilingual Plane Plane. It is found in the Mathematical Operators block and was approved as part of Unicode Version 1.1 in 1993
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